JP2674908B2 - Pipe joining equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe joining device for joining pipes laid in an open cut groove.

[0002]

2. Description of the Related Art Conventionally, when a pipe is laid by an excavation method, a pipe joining device may be used to sequentially join the pipes arranged in the excavation groove. This pipe joining apparatus is, for example, as shown in FIG. 7, and a pair of clamps for holding the joining target pipes 1 and 2 on the main body frame 3 arranged along the pipe axial direction of the joining target pipes 1 and 2. Devices 4, 5 are provided. One of the clamp devices 4, which is one of the pipes 1 and 2 to be joined, grips a pipe body on the receiving side of the pipe 1 which is already arranged or buried in the cut groove.
The other clamp device 5 is for gripping the tube barrel on the insertion side of the pipe 2 to be joined to the pipe 1, and the main body is movable toward and away from the one clamp device 4. It is provided on the frame 3. A cylinder device 6 for moving the clamp device 5 is provided between the other clamp device 5 and the main body frame 3.

[0003]

However, according to the above-mentioned conventional structure, when the pipe joining device is used by being suspended from the tip of the drive arm of a power shovel or the like, the pipes 1, 5 are clamped by the clamp devices 4, 5. In the state where 2 is gripped, one end side of the already joined pipe 1 is joined to the other pipe, so that the posture thereof is unlikely to collapse, but the pipe 2 to be newly joined is clamped on the tube barrel on the insertion side. Since only the device 5 grips the tube, the posture of the tube is collapsed, and the tubes cannot be centered.

The present invention solves the above problems, and an object of the present invention is to provide a pipe joining apparatus capable of gripping both pipes in a centered state at the time of joining.

[0005]

In order to solve the above-mentioned problems, a pipe joining apparatus of the present invention has a main body frame arranged along the pipe axial direction of pipes to be joined and fixed to one end side of the main body frame. Clamp device for holding one of the pipes to be joined, and the other pipe to be joined provided on the body frame so as to be movable in the axial direction of the pipe toward the first clamp device. A second clamp device for holding the pipe, a third clamp device fixedly provided on the other end side of the main body frame for holding the other pipe to be joined slidably in the pipe axis direction, and a second clamp device. Bei example a cylinder device for output retraction drive toward the first clamping device, with respect to the horizontal level
The body frame is tuned via a lifting point vertical movement device that variably adjusts the posture.
Support the frame and place the body frame against the horizontal level on the body frame.
The structure is provided with a tilt meter for measuring the tilt angle of the ram's posture .

[0006]

With the above structure, in the state where the pipe joining device is arranged above the pipes to be joined, one of the last pipes to be joined which has already been joined is grasped by the first clamp device, and the other join is newly made. The target tube is gripped by the second clamp device and the third clamp device. At this time, the other pipe to be joined is held at two points by the second and third clamp devices, so that the one pipe to be joined held by the first clamp device is maintained in a stable posture with respect to the main body frame. It will be centered with respect to.

In this state, the cylinder device is driven to move the second clamp device toward the first clamp device, and the other pipe to be joined grasped by the second clamp device is grasped by the first clamp device. It is joined to one pipe to be joined. At this time, by allowing the other pipe to be joined to slide in the axial direction of the pipe in the third clamp device, both pipes can be joined while maintaining the centered state.

[0008]

An embodiment of the present invention will be described below with reference to the drawings. 1 to 5, pipes 1 connected to each other
Reference numerals 1 and 12 are of a slip-on type, and a receiving port 13 is formed at an end of one pipe 11 and an insertion port 14 is formed at an end of the other pipe 12.
One side is already arranged or buried in the excavation groove, and the other tube 12 is newly connected. The pipe joining device 15 is supported at the tip of a drive arm such as a power shovel through both ends of the pipes 11 and 12 along the pipe axial direction via cords 16 as suspending means.

This pipe joining device 15 includes both pipes 11, 1.
2 has a main body frame 17 arranged along the axial direction of the pipe, and the main body frame 17 has a first clamp device 18 for gripping a pipe barrel on the receiving side of one pipe 11 and the other pipe 1.
A second clamp device 19 and a third clamp device 20 for gripping the tubular body on the insertion side of No. 2 are provided. Also, the first
The clamp device 18 is fixed to one end side of the main body frame 17, and the third clamp device 20 is fixed to the other end side of the main body frame 17. Further, as shown in FIG. 5, a slide member 22 such as a fluororesin material is provided on the inner surface side of the clamp arm 21 of the third clamp device 20 to allow the pipe 12 to slide.

The second clamp device 19 is provided so as to reciprocate in the tube axis direction along the linear guides 17a provided on both sides of the main body frame 17, and the main frame 17 and the second clamp device 19 are reciprocally movable. A cylinder device 23 that drives the second clamp device 19 to move back and forth toward the first clamp device 18 is provided therebetween.

The cord body 16 has one end supporting one side of the main body frame 17 provided with the third clamp device 20, and the other end of the main body frame 17 via a hanging point moving device 24 which serves as an inclination adjusting means. Supporting the other side.

As shown in FIG. 2, the suspension point vertical movement device 24 variably adjusts the attitude of the main body frame 17 with respect to the horizontal level.
It is pinched and fixed by 5, 26. An elevating plate 29 is vertically movably supported by a pair of guide rods 27, which also serve as connecting bolts for fastening the upper and lower mounting plates 25 and 26, via a linear bush 28.
Further, the lower mounting plate 26 is provided with an adjusting cylinder device 30 for vertically driving the elevating plate 29, and the elevating plate 29 is provided with a pair of hinges 31 for fixing the rope 16. There is. Further, an inclinometer 32 is provided in the middle of the main body frame 17, and the inclinometer 32 is provided with respect to the horizontal level.
This is to measure the inclination angle of the posture.

Then, as shown in FIG.
Control device (CPU) 3 via the A / D converter 33
4 and the control device 34 is provided with an actuator 36 and a position detector 37 via a positioning unit 35. The actuator 36 forms the drive unit of the adjusting cylinder device 30, and the position detector 37 is the hinge 31.
Is to detect the amount of movement of the object.

The operation of the above configuration will be described. In the excavation groove to be laid, the pipe joining device 15 supported via the rope body 16 is arranged above the pipes 11 and 12, and the one pipe 11 at the rearmost end already joined is arranged as the first clamp device 18.
The other tube 12 to be newly joined by being gripped by is clamped by the second clamp device 19 and the third clamp device 20. Further, the pipe joining device 15 and the pipes 11 and 12 to be joined are slightly lifted via the cord 16. At this time, since the other pipe 12 is held at two points by the second and third clamp devices 19 and 20, the other pipe 12 is maintained in a stable posture with respect to the main body frame 17 and is gripped by the first clamp device 18. The tube 11 is centered.

Further, since the weight of the pipes 11 and 12 is loaded on the pipe joining device 15, the center of gravity of the system is determined by each clamp device 1.
The posture of the main body frame 17 may become non-horizontal depending on the position where the pipes 11 and 12 are gripped by 8, 19, and 20. In this case, the tilt angle of the attitude of the main body frame 17 with respect to the horizontal level is measured by the inclinometer 32, and the measured angle is sent to the control device 34 via the A / D converter 33 to determine whether the main body frame 17 is tilted. To judge. Then, when the main body frame 17 is inclined, the suspension point vertical movement device 24 is operated to adjust the posture of the main body frame 17.

That is, the control device 34 instructs the actuator 36 to drive via the positioning unit 35, and the adjusting cylinder device 30 is moved back and forth while the operation amount is measured by the position detector 37. As a result, the guide rod 27
The elevating plate 29 relatively moves up and down along the
The hinge 31 connected to the main body 17 moves up and down relative to the main body frame 17. As a result, the body frame 1
The other end side of 7 moves up and down to adjust its posture horizontally.

After centering the pipes 11 and 12, the cylinder device 23 is driven to move the second clamp device 19 toward the first clamp device 18,
The other pipe 12 held by the clamp device 19 is joined to the one pipe 11 held by the first clamp device 18. At this time, in the third clamp device 20, by allowing the sliding member 22 to slide the other pipe 12 in the pipe axial direction, both pipes 11, 1 can be maintained while maintaining the centered state.
Two can be joined.

FIG. 6 shows another embodiment of the present invention. Members having the same functions as those of the previous embodiment are designated by the same reference numerals and the description thereof will be omitted. In FIG. 6, the pipe 12 is provided on the inner surface of the clamp arm 21 of the third clamp device 20.
A roller 31 that comes into contact with the outer peripheral surface of the roller is rotatably provided.

According to this structure, the rolling of the roller 31 allows the sliding of the tube 12 in the third clamp device 20. Other functions and effects are the same as those of the previous embodiment.

[0020]

As described above, according to the present invention, the other pipe to be joined is held at two points by the second and third clamp devices, so that a stable posture can be maintained with respect to the main body frame. It is possible to support the one pipe to be joined and the other pipe to be joined which are gripped by the first clamp device in a centered state, and in the third clamp device, the pipe axial direction of the other pipe to be joined. By allowing the sliding of the pipes, it is possible to join both pipes while maintaining the centered state.

[Brief description of the drawings]

FIG. 1 is an overall front view of a pipe joining apparatus showing an embodiment of the present invention.

FIG. 2 is an enlarged view of a suspension point vertical movement device according to the same embodiment.

FIG. 3 is an overall front view of the pipe joining apparatus in the same embodiment.

FIG. 4 is a block diagram showing a control system of the pipe joining apparatus in the embodiment.

FIG. 5 is an enlarged view of a third clamp device in the embodiment.

FIG. 6 is an enlarged view of a third clamp device according to another embodiment of the present invention.

FIG. 7 is an overall perspective view of a conventional pipe joining device.

[Explanation of symbols]

 11, 12 Pipe 15 Pipe joining device 18 First clamp device 19 Second clamp device 20 Third clamp device 22 Sliding material 24 Lifting point vertical movement device 31 Roller

Claims (1)

(57) [Claims] 1. A main body frame arranged along the tube axis direction of a pipe to be joined, a first clamp device fixedly provided on one end side of the main body frame to grip one pipe to be joined, (1) A second clamp device that is supported by the main body frame so as to be movable in the tube axis direction toward the clamp device and holds the other pipe to be joined, and is fixed to the other end side of the main body frame. is in a third clamping device for gripping slidably the other bonding target tube in the tube axis direction, Bei example a cylinder device for output retraction driven toward the second clamping device to the first clamping device, a horizontal level Modulate attitude to
Supports the main body frame through the lifting point vertical movement device that adjusts,
Position of the body frame relative to the horizontal level
A pipe joining apparatus, which is provided with an inclinometer for measuring the inclination angle of the .